Furnace



' charge ashes,

. magazine is made flaring, andI a magazine-feed, a conical Yrheinterposed magazine 3.

' lifting grate, Ilocated centrally or axially beneath the fiar- UNITED STATES Prfriuvr OFFICE.

JAMES GAnDNEn sANDERsoN, or scRANToN, PEnNsYivANmfj F-URNACE'.

SPECIFICATION arming pa a of Letters Patent No. 592,616, dated october 2e, 1897.

Application filed Octolier 8, M596. Serial No. 68,258. (No model.) I

`561,729, granted June 9, 1896. In said Letters Patentl describe and claim a furnace having grate located centrallyJ beneath said feed, a tapered, corrugated, o1' ribbed fire-pot, means for lraising and lowering the grate land rotating it to disand certain means for feeding air and steam to the grate for promoting combustion or producing gas,asmight be desired.

My present invention consists in the novel constructionand arrangement of the parts of. such a furnace, as will be hereinafter 'fully described, and particularly pointed out lin the claims. I y

In the accompanying drawings, Figure lis a vertical axial section. of a gas-producing furnace to which is applied my present improvements. Fig. v2 is a horizontal section of the same above the. grate, looking downward; and Figs. 3 vand 4 are respectivelyvva front view and side elevation of the removable segments which formthe ribbed or corrugated and -tapered'upper surface of the lire-pot.

1 represents a furnace of any common construction-such, for instance, as. a ygas-producing furnace-and2 isthe hopperfor feedin g fueliuto the combustion-chamber'through,

Tllhe magazine 3 is constructed with its lower end 3a of larger diameter thanitsmpper end 3b, whereby the 'n obtain therey from the important result of preventing the' packing of the Wet fine fuel which may be burned in the furnace Yand'which results in a stoppage of the feedyat times.

4 represents the vertically adjustable and which is bf conical form and ing magazine. Thisgrate has a short downward tubular projection 4;?, which telescopes with an upward projection 5a of a draft-nue =the`grate and the fuel upon it.

edge of said ring base of the grate, so that it will support the The grate depends for its support mainly or wholly upon a rod 6, which is seated at 7a .upon the lever 7,`which is fulcrumed at 8 and .carries at its' outer end a counterbalanceweight 9, which is adjustable on the lever vand is designed to counterbalauce the load of ing this means of support for the grate the extension la may be made much the draft-flue may be elevated from the door shorter and,

By employ- A of the' ash-pit and' offer no inconvenience cleaning the latter. It `wil1 be understood that the present mounting of the grate admits of the same manipulation-namely, raising and lowering it-as described in my Letters Patent aforesaid. Y 10 represents the lire-pot, which comprises a rotatable base-ring 11, mounted horizontally upon rollers 12, having hangers 13 projcting inward from the'wall of the ashpit.- The ring 1l is concentric with the grate, and the inner projects slightly beneath the grate in the event of the normal supportof 4 such memberbecornin g disarrangedor the lever being raised-too high. A further object in thus making the grate andring overlap isto make a'tight connection at this point when `the parts are in normal operation. The base-v ring `11 has cast or otherwise provided on its.

under face an annular bevel gear or rack 14,l with which engages a bevel-pinion l5, driven'` by a shaft 16, mounted vin a hanger 17, and having without the ash-pit means for turningk it, such a's crank 18.` The annular ring l1 is of such width as to provide a space lOVbetween the grate and the {ire-pot. To impart a tapering., ribbed, or corrugated upper surface to the fire-pot lO, the ring ll has mounted upon it a number of independent castings or other suitablyconstructed segmental 'parts 19, formed with recesses 20, in which project bosses 2l on the upper face of the ring 11, in order to keep the segmental parts 19 in place, as will be best understood upon referring to Figs. 2, 3, and 4. TheV segments 19 have their side faces 22 formed in planes radial with respect to the Iring 1l, so that a given number I of them will fit closely upon and cover the said ring. Each `segment is further provided with a rib orv crest 23 and lateral straight sh0ulders24, so that when the segments are IOS ' pot is given the necessary tapered ordished form. These segments and ring afford a cheap construction for the {ire-pot, all the segments being but reproductions of a single form, and they offer ready-andcheap `eaii` for keeping the iire-pot-in repair by replacing the individual parts as soon as they become impaired. The segments can obviously be made hollow for economy of construction.

Having thus described my invention, the following is what I claim as new therein and. desire to secure by Letters Patent:

l. A furnacecomprising a conical grate, a base-ring having an opening over which the grate is located, a fire-pot mounted on the base-ring, means for supporting the base-ring, means for rotating the base-ring, and means for raising and lowering the grate; substantially as described.

2. A furnace comprising a conical grate, a base-ring having an opening over which the grate is located, means for supporting the base-ring, means forrotating the base-ring, means for raisin g and lowering the grate, and a counterbalance-weight for supporting the grate at desired height with relation to the base-ring; substantially as described.

3. A furnace comprising a conical grate, a base-ring having an opening over which-the grate is located, and a bevel-gear, brackets having rollers on which the 'basering is mounted, a bracket in which a shaft is mounted, a bevel-pinion located on the shaft and meshing with the bevel-gear, and means for raising and lowering the grate, substantially as described.

4. `A furnace comprising a conical grate, a base-ring having an opening over which the grate is located,a fire-pot consisting of toothed and ribbed segments mounted on the basering, means for supporting the base-ring, means for rotating the base-ring, and means for raising and lowering the grate, substan- -tially as described.

5. A furnace comprising a conical grate, a base-ring having an opening over which the grate is located, a'fre-pot mounted-on the base-ring, means for supportin gthe has1 ring,

means for rotating the base-ring, means for raising and'lowering the grate, and a downgrategtdesired height .with reference 'to the ase-ring; substantially as described.

7. A furnace comprising a-conical grate, having a tubular extension, a base-ring having an opening over which the edge of the grate projects slightly, a draft-flue telescoping with the tubular extension, a rod mounted axially in the grate and extending downward beyond the flue, a lever on which the rod is supported, and a weight adjustable on the lever for counterbalancing the lweight of the grate and supporting it at desired height with reference to the base-ring, substantially as described. y

8. A furnace comprising a conical-,gratas base-ring having an opening over which the grate is located, a fire-pot consisting of an annular series of segments secured to the basering, having their side faces formed in planes radial with respect to the base-ring and provided with crests and lateral straight shoulders, and means for rotating the base-ring; substantially as described.

- 9. A furnace comprising a-conical rate, a base-ring having an opening over which the grate is located and formed with lbosses on its upper-surface, a fire-pot consisting of an annular series of segments 'having recesses in the base thereof which receive the bosses, and means for rotating the base-ring; substantially as described.

10. A furnace comprising a conical grate, a base-rin g formed with bosses on its upper surface, and having an opening over which the grate is located, a fire-pot mounted on the based-ing consisting of an annular series of segments having recesses in the base thereof which receive the means for supporting the base-ring, means for rotating the basering, and means for raising and lowering the grate; substantially as described.'

In testimony whereof I have set my hand.

JAMES G MTDWER SANDERSON.

J. ATKINs ROBERTSON.

ICO 

